Magnetic core



FIG. 1 is a perspective view of a magnetic core showing the new design;

FIG. 2 is a front view of the magnetic core element 1 shown separated for ease of illustration;

FIG. 3 is a left side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view thereof;

FIG. 7 is a front view of the magnetic core element 2 shown separated for ease of illustration;

FIG. 8 is a left side view thereof;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof; and,

FIG. 11 is a perspective view thereof. 

CLAIM The ornamental design for a magnetic core, as shown and described. 